CONSTRUCTION CHEMICALS AND ADDITIVES

Transcription

1 CONSTRUCTION CHEMICALS AND ADDITIVES AGRANA STARCH

2 Starch plants Countries with production sites AGRANA STARCH LIKELY CALAR STARCHES AGRANA an internationally oriented Austrian company specialises in processing and adding value to high quality agricultural rawmaterials such as corn, potatoes and wheat to make a wide range of starch products, tailored to different industrial uses. AGRANA STARCH has a long and exceptionally successful track record in the development and marketing of modified starch products, under the brand name, for the construction materials industry. The products are the result of longstanding and intensive research and development in close cooperation with the Research Division Starch (ARIC: AGRANA Research and Innovation Center). AGRANA STARCH S CUSTOMER FOCUS is characterized by extensive and competent advisory services which completes the portfolio offered by AGRANA such as individual technical advice customized products individual service clean and consistent quality short delivery time APPLICATIONS LIKELY CANDIDATES AGRANA starch ethers are used in mineral-based binding systems such as gypsum and cement: Gypsum, slaked lime, cement and various combinations are typical applications where starches are used to immediately and reliably improve the consistency of the desired end-product properties. increases the efficiency of conventional water retention agents and improves the adhesive strength of combinations of building materials for difficult surfaces. They can also be used to optimize the efficacy of air-entraining admixtures. starch ethers offer a wide range of different and unique product properties specifically designed, for the needs of industries such as the drymix mortar industry, with characteristics including. exact adaptation to the required rheological product property for such applications as: tile adhesives joint compounds plaster and render gypsum plasterboards concrete technology dispersion systems wallpaper glues insulation board adhesives high product consistency by using the latest technology in our manufacturing plants and maintaining the highest standards of our quality assurance excellent overall compatibility with additives used in these applications highest efficiency at the required dosage ecologically friendly and nontoxic Beyond these applications AGRANA Starch ethers are well established in the fabrication of gypsum plasterboards (COLLAMIDON ). «page 2»

3 GYPSUM SYSTEMS Tile adhesives standard (CTA acc. EN12004) Plasters Skim coats Gypsum plaster boards CONCRETE WALLPAPERGLUE COLLAMIDON 8805 AMITROLIT 8400 AMITROLIT 8865 AMITROLIT 8869 AMITROLIT 8873 AMITROLIT 8872 AMITROLIT 8873C Skim coats ETICS External Thermal Insulation Composite System Tile adhesives improved (CTA acc. EN12004) Plasters CEMENTITIOUS SYSTEMS AMITROLIT 8882 Masonry mortars AMITROLIT 8860 AMITROLIT 8850 PRODUCT SELECTION GUIDE Stabilizer for Self Compacting Concrete (SCC) Rebound reducing agent for shotcrete (dry & wet) Wallpapers glues INFORMATION: Above given information is based on findings, operating experience and extensive research evolving from practical application. Due to other raw materials and supplementary chemicals being used in formulations as well as varying processing conditions we are not liable for the above given information. Please contact us for our technical support. «page 3»

4 PROPERTIES AND CHARACTERISTICS OF STARCH ETHERS IN HYDRAULIC BINDER SUSPENSIONS THICKENING starch ethers strengthen the consistency of materials which are based on hydraulic binders resulting from a distinctive impact on the rheological behaviour of the binding matrix in water. Particularly the flow characteristics, the yielding point as well as the water demand of the various formulations are enhanced by. With the appropriate application of the types, materials including renders or tile adhesive show significantly high non-sag properties. ADJUSTMENT OF THE FLOW CHARACTERISTICS As a result of the impact on the flow properties, the structural viscosity of the suspensions and the time dependent flow properties, such as thixotropy or rheopexy, can be adapted to the desired application as well as processing technique. With the selection of the right type and the appropriate dosage, the workability of renders and tile adhesives can be optimized. COMPATIBILITY WITH OTHER COMPONENTS products are compatible with commonly used aggregates and additives. improves the efficiency of the additives and significantly reduces the required quantities. The product properties are resulting in an increase of the water retention, enhanced adhesion and optimized workability. In general, the products show low influence on the reactivity of the hydraulic binder (cement, gypsum, lime). CALCIUM SENSITIVITY OF THE STARCH ETHER Akin to other technical products based on poly saccharides, which are categorized amongst Polyhydroxyl-Polymers, the starch ethers, may exhibit a certain level of sensitivity towards polyvalent cations, such as calcium, with regards to the solution rate and the peak viscosity. Such sensitivity can be related to the quantity of used, the interdependence to the type of polyvalent cations, the ph and in addition the type of. In general, products exhibit a lower sensitivity towards calcium-ions at higher ph levels in comparison to other starch products. «page 4»

5 CONSTRUCTION MATERIALS CEMENTITIOUS BASED CONSTRUCTION MATERIALS A wide range of different starch ethers guarantee that we meticulously meet our customers needs and preferences when it comes to provide optimized formulations. The series comprises different raw materials combined with diverse modifications to exceed the product properties with regards to rheological behaviour workability sag resistance water retention set retardation Application areas include: mortars renders and skim coats tile adhesives (C1 and C2 according to EN12004) external wall insulation systems and beyond GYPSUM BASED CONSTRUCTION MATERIALS The demanding formulation of gypsum based materials requires specific rheological behaviour. A specific range of different starch ethers provide the exactly desired behaviour and improvement in the material performance. The series comprises different raw materials combined with diverse modifications to exceed the product properties with regards to rheological behaviour workability sag resistance water retention set retardation Application areas include: mortars and adhesives renders and skim coats machine processed plaster joint compounds and beyond SUITABLE PRODUCTS C SUITABLE PRODUCTS C 8882 For the highly demanding mass production process of gypsum plasterboards, the COLLAMIDON is a unique additive to optimize the adhesion between the cardboard and the gypsum base. SUITABLE PRODUCT COLLAMIDON 8805 «page 5»

6 PRODUCT PROPERTIES OF SELECTED PRODUCTS (e.g. CTA) SETTING TIME Water dosage (g) Time (min) Time (h) Resistance to slip OPEN TIME WATER DOSAGE AT SAME VISCOSITY c 8873c begin of setting end of setting INFORMATION: The above graphs show the general characteristics of different products with a reference CTA-mixture. The individual results may vary due to differing raw materials, additives as well as testing conditions c 8882 «page 6»

7 CONSTRUCTIONS MATERIALS MACHINE SPRAYED PLASTER PART BY WEIGHT Gypsum-Lime binding system Gypsum 66 Hydrated lime 3 Lime stone powder 30 Retarder 0.2 Celluloseether 0.1 Air entraining agent 0.01 Perlite 0 1mm Lime-Cement binding system CEM I 15 Hydrated lime 5 Sand 80 Celluloseether 0.1 Air entraining agent TILE ADHESIVE PART BY WEIGHT Formulation A (EN C2) CEM I 40 Quartzsand mm 59 Redispersionpowder 0.5 Celluloseether Formulation B (EN C2) CEM I 35 Quartzsand mm 63 Redispersionpowder 1 Celluloseether ETICS ADHESIVES PART BY WEIGHT Portland cement CEM I 42,5 R 25 Quartz sand 62 Limestone powder 10 Emulsion powder 2.5 Cellulose ether Air-entraining agent 0.01 SKIM COAT PART BY WEIGHT White cement 30 Calcium carbonate 69.5 Celluloseether C 0.05 STABILIZER FOR FLUID CONCRETES PART BY WEIGHT (Flow cm) CEM II A M 42, 5N 230 Fly ash 60 0/4 aggregates (moist) 930 4/16 aggregates (moist) 920 Water 180 Superplasticizer INFORMATION: Above given information is based on findings, operating experience and extensive research evolving from practical application. Due to other raw materials and supplementary chemicals being used in formulations as well as varying processing conditions we are not liable for the above given information. Please contact us for our technical support. «page 7»

8 AGRANA Starch Conrathstraße 7, 3950 Gmuend, Austria Version 11 / 2017